Drill-holder.



A. M. BECKER.-

DRILL HOLDER.

APPLICATION FILED luus'n. 1917.

LL37 PatentedSept. 25,1917.

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A. M. BECKER.

DRILL HOLDER. APPLICATION FILED JUNE H. 1917,

1 ,241 ,327. Patented Sept. 25, 1917.

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DRILL-HOLDER.

Specification of Letters Patent.

Patented Sept. 25, 191?.

Application filed June 11, 1917. Serial No. 173,922.

To all whom it may concern:

Be it known that I, AUdUs'r M. BEoKER, a citizen of the United States, and residing at Cliffside, in the county of Bergen and State of New Jersey, have invented certain new and useful Improvements in Drill- Holders, of which the following is a speci fication such as will enable those skilled in the art to which it appertains to make and use the same.

This invention relates to portable handoperated rock drill holders, and the object of the'invention is to provide a device of the class specified which is simple and prac tical in construction and operation.

The invention is fully disclosed in the following specification, of which theaccompanying. drawings form a part in which the separate parts of my improvement are designated by suitable reference characters in each of. the views, and in which Figure 1 is a front View of my improved drill holder; v

Fig. 2 a partial section on the line 2-2 of Fig. 1;

Fig. 3 a view similar to Fig. 2 but showing parts of the construction in a different position and with certain parts omitted;

Fig. 4 a detail perspective. view of a wrench device which I employ;

Fig. 5 a section on the line 55 of Fig. 1;

Fig. 6 a view similar to Fig. 5 but showing only a part of the construction and indicating parts in a'diiferent position;

Fig. 7 a view similar to Fig. 6 with parts of the construction in-a difierent position;

Fig. 8 a partial section on the line 88 of Fig. 6;

Fig. 9 a view similar to e of the construction in adi rent position and omitting a part of the construction shown in Fig. 8; and,

Fig. 10 an enlarged detail view of a spring-controlled dog which I employ.

In the. practice of my invention I provide a mainframe a which is U-shaped in form in cross section as shown in Fig. 5, or provided with forwardly directed top and bottom bearing membersa and a having detachable bearing caps a which form between the same and the bearing members apertures a? in which a drill b is adapted to be mounted as shown in the drawings.

The frame a is provided adjacent to. the 1 8 with parts top of the back wall thereof with an arcshaped recess a, and a plate a is secured to the frame a by bolts 0 and is provided with a similar recess 0 and the recesses a and c are adapted to receive the cross rod (Z of a yoke-shaped frame 6Z2 as clearly shown in Figs.v 2 and 5, said frame being provided with side lugs or projections d and a backwardly directed lug or projection d Pivoted to the lugs 6Z and d are telescoping legs 6 composed of separate parts 6 and 6 said parts being held in difierent positions of adjustment by screws or bolts 6 operating in connection with a plurality of indentures e in the part 6 The lower end of the part 6 of said legs is provided with a pointer 6 held in position by means of a screw or bolt 6 With the construction of the legs 6, as shown and described, the frame a. may be raised or lowered in relation to the ground or rock upon which it is placed as will be readily understood.

Adjustably mounted on the top of the main frame a is a supplemental frame f comprising an annular base portion 7 and a central upwardly directed arc-shaped portion F, the face of which is beveled as shown in Figs. 1, 5, 6 and 7 of the drawing. lhe annular base portion 7" is provided with a central aperture f through which the drill b is adapted to pass as shown in Fig. 5.

Secured to the top of the supplemental frame 7 by means of a screw is a block 9 provided with an upwardly directed recess 9 the side walls of which are arranged at an angle to the block 9 as clearly shown in Figs; 2 and 8. Pivoted to one side of the block 9 as shown at 9 Fig. 8, is a dog g v having a nose 9 and a curved shoe portion 9 which is at right angles to the body portion of the dog 9*. The dog 9 is operated in one direction by a spring g secured to the block 9 as shown at 9 Fig. 3, said dog being operated in the other direction by a wrench operating device it pivoted to theblock 9 at if, and the end of the arm 71 of which is adapted to operate in connection with the shoe portion 9 of the dog '9 as 6O 1 a and adapted to operate in connection with other way, as hereinafter described. The

arm 7& of the device 72, is provided adjacent as shown in Figs. 2 and 3 of the drawing} The spring it serves to holdthe device h in the position shown in Fig. 9 0f the drawmg.

A wrench device 2' comprising a head member 2' and a shank portion 2' is mounted on the supplemental frame f, as shown in Figs. 2 and 5, with the jaw 71* in the head member 6 thereof inclosing the drill 79 as shown in said figure, and a spring 7' is connected with the head member 2' as shown at j and with the base portion 7 of the supplemental frame 7" as shown at j and serves to hold the wrench i, or the head member 71 thereof, in the position shown in Fig. 2.

Connected with the top and bottom of the head member 2' of the wrench i are plates 2', the edge port-ions of which adjacent to the jaw 71- are beveled as shown at 2' whereby said wrench may readily grip the drill b in the operation thereof as hereinafter described, said drill 6 being octagonin form in cross section.

Mounted on .the end of the shank portion i of the wrench device 2' is a weight 71 which serves to'hold said shank portion in connection with the recess 9 in the block 9 and to move said wrench device downwardly to permit of the engagement therewith of the dog 9 as hereinafter described. The bottom of the shank portion i of the wrench is rounded as clearly shown in Figs. 8 and 9 of the drawing and is adapted to operate in connection with the recess k in the arm 72- of the wrench operating device it.

The supplemental frame may be adjusted into four different positions, one of such positions being indicated in Figs. 1, 2 and 5 to 9 inclusive, another of said positions being that indicated in Fig. 3, inwhich position the block 9 is directly opposite to the position of said block as shown in said other figures, and said frame maybe adjusted into two positions at right angles to those shown in Figs. 1 to 9 inclusive. This adjustment ofthe supplemental frame 7 is accomplished by the provision of four equally spaced slots laadj'acent to which are four correspondingly spaced apertures k A'pin k is connected with the top of the main frame a and adapted to operate in connection with the slots k while a pin is also connected with the top of the main frame the apertures 76 this construction being clearly shown in Fig. 8 of the drawing.

A lock plate m is pivoted at-m to the top,

of the plateo, as clearly shown in Figs. 2 and 3 of the drawing, and is adapted to operate in connection with the supplemental frame to hold it firmly in contact with the main frame a. The operative position of the lock plate m is that shown in full lines in Fig. 2 and dotted lines in Fig. 3.

The operation of my improvement will be readily understood by all those skilled in the art on a consideration of the foregoing specification, the accompanying drawing and the following statement.

The normal position of the parts is that shown'in' Figs. 1, 2, 5 and 9 of the drawing, in which position the wrench device 2' rests plemental frame f'and the drill b which has been placed in position by removing the capplates a as-will be readily understood, is held in such position by the opposite top and bottom beveled faces 2' of the wrench, the shank portion 71 of said wrench being locked against movement by the nose g of the dog g 'which overlaps said shank portion, as indicated inFigs. 2 and 9 of the drawing. 5

As above stated, the. strap k may be connected with the leg of the operator, or this strap may be operated by hand to move the wrench operating device it from its normal position in the direction of the arrow at, Fig. 1, for the purpose of operating the wrench device 2' to rotate the drill and to raise said drill, as hereinafter described. Y

The position of the wrench device 2' shown in Fig; 6 and. full lines in Fig. 8 indicates the first step of accomplishing the above result, and in this position of the parts the wrench operating device 71., or the arm k thereof, has moved the dog 9 or the nose g thereof out of engagement with the shank portion of the wrench device 2', and said shank 13011101118 ralsed to bringthe wrench device mtothe posltlon shown in full lines in said figures in which position of said wrench device-the opposite top and bottom beveled portions of of the jaw i operate in connection with the opposite faces of the V The drill b and lock said drill in said jaw. continuation of the movement of the wrench operating device-h, or the movement of said device from the full line position to the dotted line'position indicated in Fig. 8 will move the .wrench device 2' upwardly into the position shown in Fig. 7 and carry the drill Z2 therewith, or move said drill b vertically in the bearings a and a of the main frame, and the still further movement of the device it in the direction of the arrow :1: will cause the wrench device 2' to drop from its the wrench operating device 72. will be moved in the stone or rockand rotating said drill Y a fraction of a revolution in said vertical movement.

I also employ a spring a which is secured to the top portion of the bearing member a as shown at n and which is adapted to operate in connection with the faces of the drill to hold said drill against rotation, in the movement of the wrench device 2' and the parts in operative connection therewith from the position shown in Fig. 7 to their normal position.

My improved drill holder by reason of its construction may be operated or manipulated in any desired place or in corners, the latter being accomplished by reason of the adjustment of the supplemental frame f which permits the shifting of the wrench operating device it into a position whereby the operator may manipulate the same without any inconvenience whatever, the telescoping legs facilitating the vertical adjustment of the frame a to permit the use of drills of varying sizes, and it will be understood that various changes in and modifications of the details of construction herein shown and described may be made, within the scope of the appended claims, without departing from the spirit of my invention or sacrificing its advantages.

t will be noted in Figs. 1 and 5 of the drawing that the legs 6 may be weighted in the usual or any desired manner, and for this purpose I have indicated at 0 in dotted lines, cylindrical blocks or similar devices for accomplishing the desired result.

Having fully described my invention, what I claim as new and desire to secure by Letters Patent, is

1. In a device of the class described, a main frame, adjustable means for supporting said frame, means for supporting a drill in said frame, a supplemental frame adjustably mounted on the main frame, a wrench device mounted on said supplemental frame and adapted to operate in connection with 1 said drill, and means mounted on said supplemental frame for operating said wrench device to give the drill a vertical and rotary movement.

2. In a device of the class described, a main frame, means for supporting said frame, means for supporting a drill in said frame, a supplemental frame mounted on the first named frame, means for adjusting said supplemental frame into different positions and for locking the same in any desired positionof adjustment, a wrench device mountedon said supplemental frame and adapted to operate in connection with said drill, and tensionally controlled means mounted on said supplemental frame for operating said wrench device to give the drill a vertical and rotary movement.

3. In a device of the class described, a

mainframe, a yoke-shaped frame connected therewith, telescoping legs pivoted to said yoke-shaped frame, means for supporting a drill in said frame, a supplemental frame mounted on the main frame, a wrench device mounted on said supplemental frame and adapted to operate in connection with said drill, tensional means for holding said wrench device in position to engage said drill, means for locking said wrench device against movement, and means mounted on said supplemental frame for operating said wrench device to give said drill a vertical and rotary movement.

' 4. In a device of the class described, a main frame, a yoke-shaped frame connected therewith, telescoping legs pivoted to said yoke-shaped frame, means for supporting a drill in said frame, a supplemental frame mounted on the main frame, a wrench device mounted on said supplemental. frame and adapted to operate in connection with said drill, tensional means for holding said wrench device in position to engage said drill, means for locking said wrench device against movement, and means for releasing said locking means.

5. In a device of the class described, a frame, means supporting said frame, means for supporting a drill in said frame, a drill shifting device, an adjustable supplemental frame adapted to support said device, means on said supplemental frame for operating said drill shifting device, and means for locking said device against movement.

6. In a device of the class described, a frame, means for supporting said frame, means for supporting a drill in said frame, a drill shifting device, an adjustable supplemental frame adapted to support said device, automatically operated means on said supplemental frame for locking said drill shifting device against movement, means for releasing said locking means, and means for operating said drill shifting device.

7. In a device of the class described, a main frame, means for supporting a drill in said frame, a supplemental frame adj ustably mounted on the main frame and provided with a raised arc-shaped and beveled hub portion, a drill shifting device one end portion of which is mounted on said hub portion and provided with a jaw adapted to engage said drill, means on said supplemental frameoperating in connection with the other end portion ofsaid device and adapted: to presence of the subscribing Witnesses this move the same to rotate said drill, and au-' 9th day of June, 1917:. tomaticallyioperatod means mounted on the supplemental frame for locking said dr'ill- AUGUST BECKER shifting device against movement. Vitnesses:

In testimony that I claim the foregoing C. E. MULREANY, as my invention I have signed my name in I H. E. THOMPSON.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, I

Washington, I). U. 

